Which statement will generate $3\mathrm{.}140$e$+00$ as the output?

Question $1$ options:

cout $<<$ setprecision$(2)<<3\mathrm{.}14$;

cout $<<$ setprecision$(2)<<$ scientific $<<3\mathrm{.}14$;

cout $<<$ setprecision$(3)<<3\mathrm{.}14$;

cout $<<$ setprecision$(3)<<$ scientific $<<3\mathrm{.}14$;